New Haven Model 600AT Pump-Action Shotgun | 12-Gauge

New Haven Model 600AT Pump-Action Shotgun | 12-Gauge

You are considering a vintage New Haven Model 600AT Pump-Action Shotgun. These shotguns are exact copies of the Mossberg Model 500 but were branded for resale through chain stores. The woodwork on this shotgun is holding up nicely with minor usage, storage, and handling wear — however, the buttstock is loose fitting and will need buttoning up before this shotgun is useful. The wood still retains its glossy finish, and it has a nice figure. The metalwork retains most of its factory finish but does have a few spots of light surface oxidization and high point wear, mainly around the receiver edges. The barrel measures 28-inches in length and includes a front bead sight and a C-Lect Choke (similar to a poly-choke). The bore is bright and shiny with no fouling or pitting.

  • Manufacturer: Mossberg & Sons
  • Model: New Haven Model 600AT
  • Serial Number: G981734
  • Year of Manufacture: 1976
  • Caliber: 12-Gauge Shotshells
  • Action Type: Pump-Action Magazine Tube Fed
  • Markings: No interesting or standout markings
  • Extras: This shotgun does not include anything extra

All purchases are subject to applicable Federal, State, and local laws. Please be aware of all local, state, and federal laws you are subject to, and do not purchase if you are prohibited from purchasing or possessing this product. It is the purchaser’s responsibility to comply with any restrictions on the purchase, ownership, and possession of any items purchased. We do not claim any original manufacturer warranty’s nature, extent, or availability. We do not claim the safe operation of this firearm. The buyer is responsible for having the firearm purchased to be inspected by a certified or accredited gunsmith for safety.


Out of stock

  • Remember:  Parts may require fitting by a trained gunsmith.
  • When purchasing a firearm online:  please get in touch with your local FFL dealer and MAKE SURE they know you will have a gun shipped to them. Failure to do so may incur more fees, hassle, and time. The buyer is responsible for having the firearm purchased to be inspected by a certified or accredited gunsmith for safety.
  • Your State Laws: Even though we do our best to keep up-to-date on individual state laws, it is your responsibility as a resident of that state to know them better than us. If we discover an item can’t be shipped to your location after purchase, we will refund your money minus a 20% restocking fee.
  • Check out the picture(s):  They are the best indication of the product’s condition. If there are multiple of the same item being stocked, you will receive the best-conditioned product we have until they are depleted.
  • Note:  We do not usually accept returns. However, if you are dissatisfied with your product, please email or call us, and we’ll try and work something out. Generally, we charge a 20% restocking fee unless the fault was entirely our own. Returns must be initiated within seven (7) days of receiving your product.

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